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    <script>
        var arr = [98, 65, 45, 25, 85, 635, 46];
        for (var j = 0; j < arr.length - 1; j++) {
            for (var i = 0; i < arr.length - 1 - j; i++) {
                //如果前一个数大于后一个数，则交换位置
                if (arr[i] > arr[i + 1]) {
                    var temp = arr[i];
                    arr[i] = arr[i + 1]
                    arr[i + 1] = temp
                }
            }
        }
        console.log(arr) 
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